The power locks on my front doors are either not working at all or intermitently..

THE BORDER

2003 PONTIAC VIBE

95 MILES

I had one mechanic tell me the motors were gone/going and that the new motors would need to purchased from a dealer (there are no after market door motors available for my car - 2003 Pontiac Vibe). The parts department at my local dealer told me it would be $1000 for the two motors. Are there any alternatives that you can think of? Are there any "universal" door lock kits out there that could work instead? Is it possible that the first mechanic got the diagnosis wrong? Thanks for your help